refactor: move nested skills to root + add ui-ux-pro-max + ConsentOS

- Extract 9 nested skills from website-creator/ to root skills/
- Remove duplicate seo-analyzers, seo-geo, seo-multi-channel from website-creator
- Add new ui-ux-pro-max skill with full UI/UX data
- Update install-skills.sh to sync properly
- Remove .DS_Store artifacts

Moved skills:
- api-and-interface-design
- banner-design
- brand
- design-system
- design
- frontend-ui-engineering
- slides
- spec-driven-development
- ui-styling

skills/ui-styling/scripts/requirements.txt

@@ -0,0 +1,17 @@
+# UI Styling Skill Dependencies
+# Python 3.10+ required
+
+# No Python package dependencies - uses only standard library
+
+# Testing dependencies (dev)
+pytest>=8.0.0
+pytest-cov>=4.1.0
+pytest-mock>=3.12.0
+
+# Note: This skill works with shadcn/ui and Tailwind CSS
+# Requires Node.js and package managers:
+#   - Node.js 18+: https://nodejs.org/
+#   - npm (comes with Node.js)
+#
+# shadcn/ui CLI is installed per-project:
+#   npx shadcn-ui@latest init